In a world after death, where the souls that had a life seek to satisfy their desires, in search of happiness. Throughout the works you can see how the feelings are mixed with each person, showing how pain can be saved, as well as knowing in reality what hides this world that makes the souls stagnating in the world disappear.
Angel Beats has a group of teenagers that barely know each other, coming together to fight against someone of something. Similar to how Satsuki and his friends had to team-up to defend themselves from the knights of the Red Night.
These two stories have a lively female main character who acts and thinks differently from everyone else, namely Yuri for AB! Heaven's Door and Yuuka for Classmate, Kamimura Yuuka wa Kou Itta.
These two stories are set in a world where everything, especially people, is not really what it seems. These titles also have a male main character who has just started realizing the true nature of the world thanks to the eccentric female MC, who discovered the truth first.